E-resources
Peer reviewed
-
Xu, Xianglan; Tong, Yunyan; Huang, Jin; Zhu, Jia; Fang, Xiuzhong; Xu, Junwei; Wang, Xiang
Fuel (Guildford), 01/2021, Volume: 283Journal Article
Display omitted •CO2 methanation follows the formate pathway on Ni/c-ZrO2.•The CO2* adsorbed states on the Ni/ZrO2 interface are hydrogenated to CH4.•The CO2* adsorbed states at Ni sites convert CO without further conversion to CH4.•ZrO2 improves Ni reducibility, and promotes H2O formation via H-spillover effect.•Y3+ doping stabilizes cubic ZrO2 support and improves the Ni/ZrO2 catalyst. The CO2 methanation mechanism was studied via combined in-situ FTIR and DFT calculations on the cubic ZrO2 supported Ni catalyst. The formation and evolution of CO2 initial adsorbed species were addressed. The bicarbonates produced from CO2 reacting with surface OH sites are transformed to the CO2* adsorbed state on the Ni/ZrO2 interface (CO2*-interface) that are hydrogenated to CH4. The CO2 adsorbed states (CO2*-Ni) generated from CO2 reacting with surface Ni sites are hydrogenated to CO* as a byproduct rather than an intermediate for methanation. The formate pathway is dominated for methanation on Ni/ZrO2, in which bidentate formates hydrogenation to H2COO* is the rate-determining step with the activation energy of 1.01 eV. The presence of ZrO2 support improves the electron mobility and reducibility of Ni, and induces H-spillover effect to promote H2O* formation. Y3+ doping into the support of Ni/ZrO2 stabilizes the c-ZrO2 phase and promote methanation activity of the catalyst.
Author
![loading ... loading ...](themes/default/img/ajax-loading.gif)
Shelf entry
Permalink
- URL:
Impact factor
Access to the JCR database is permitted only to users from Slovenia. Your current IP address is not on the list of IP addresses with access permission, and authentication with the relevant AAI accout is required.
Year | Impact factor | Edition | Category | Classification | ||||
---|---|---|---|---|---|---|---|---|
JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Select the library membership card:
If the library membership card is not in the list,
add a new one.
DRS, in which the journal is indexed
Database name | Field | Year |
---|
Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
---|
Source: Personal bibliographies
and: SICRIS
The material is available in full text. If you wish to order the material anyway, click the Continue button.